PROTECTING OUR AIR AND WATER WITH FLEXIBLE MEMBRANE
LINERS, COVERS, AND FABRICATIONS

PetroGard™ I (back to specifications)

Performance Specification

1.0 SCOPE 1.1 This specification establishes the requirement for a custom factory prefabricated flexible liner system utilizing the latest state-of-the-art concepts for secondary containment in accordance with the latest Federal and Local regulations. 1.2 The work shall include design, factory fabrication, field interface assembly, anchorage hardware, piping, prefabricated interface ports, test walls, and monitoring wells. 1.3 The materials of construction shall be compatible with the product to be stored in the primary containment vessel(s), and the material=s product resistance to permability shall conform to the criteria stated elsewhere in this specification. 2.0 APPLICABLE DOCUMENTS 2.1 Specification: Federal Standard 191, material testing of protective coated industrial textiles. 2.2 Specification: A.S.T.M. Standard 0751-73, method of testing coating fabrics. 2.3 Specification: MIL-I-4520, quality control inspection and testing for the fabrication of flexible membrane materials. 2.4 Specification: Buyers general specification and site drawings. 3.0 REQUIRED SUBMITTALS 3.1 The successful bidder shall provide material and joint test certification demonstrating that the material and fabrication joints shall comply with the physical and chemical resistance requirements of this specification. 3.2 The bid proposal shall include design drawings showing secondary containment interface details at all apertures and shall also include installation instructions. 3.3 The liner system shall be fabricated by MPC Containment Systems, Ltd., Chicago, IL. 4.0 WARRANTY 4.1 A minimum twenty year warranty covering material and workmanship is required. 5.0 ENVIRONMENTAL DESIGN REQUIREMENTS 5.1 The flexible secondary containment liner shall be capable of withstanding the following environmental installation conditions: 5.1.1. Ambient Temperature 25 - 100 Degrees F. 7.0 LINER MATERIAL FABRICATION DETAILS 7.1 All panel joints shall be thermal automatic high pressure welded, utilizing a two inch lap-seal construction with a tolerance of +/- a quarter of an inch on the lap. 7.2 The coating formulation shall be suitable for thermal fabrication and shall also be capable of conforming to the following test procedures without affecting the requirements of Section 6.0. 7.2.1 Dead Load Criteria for Joints: 7.2.1.1 Seams carry a minimum dead load of 50% of the minimum strip tensile without separation of the fabric in the warp direction when the temperature of the FML is 70 degrees F, when tested in accordance with MIL-T-52983E. 7.2.1.2 Seams carry a minimum dead load of 25% of the strip tensile when the temperature of the FML is 160 degrees F, when tested in accordance with MIL-T-52983E. 7.2.1.3 Seams shall carry a minimum seam shear strength of 95% of the minimum strip tensile strength of the fabric when tested in accordance with A.S.T.M. D-751, Section 50. 7.3 Patterning 7.3.1 The flexible membrane liner shall be fabricated from full length modular panels with a maximum of one horizontal splice seam per panel. Splice seams shall be used only when required to utilize full roll size. 7.3.2 Panel joints shall be patterned as shown on the drawings. 7.3.3 Secondary joints and reinforcing areas shall be thermally welded. Stitching and cementing shall not be allowed for normal panel fabrication. 7.3.4 Aperture locations located in the liner shall be suitably reinforced as common practice by the factory fabricator. Aperture locations in general shall be produced from rigid bulkhead fittings and other mechanical compression members made from synthetic type materials which normally resist corrosion. GO TO TOP 6.0 MATERIALS AND WORKMANSHIP 6.1 Flexible Liner Material Description 6.1.1 The flexible liner material shall consist of a high strength reinforcing fabric weighing approximately five (5) ounces per square yard, coated with an overall protective polymer; total weight is approximately thirty (30) ounces per square yard. 6.1.2 Coated Liner Material: The coating compound shall be selected to have characteristics suitable for high temperature thermal-welding shall be compounded to withstand the attack of high temperature, humidity and mildew, while at the same time, resisting the attack of chemical resistance of the products to be stored in the primary containment vessel(s). 6.1.3 Weight and Thickness: 30 ounces per square yard + / - 2 ounces; 30 mils. + / - 2 mils. 6.1.4 Tensils Strength Grab lbs.,A.S.T.M.,D-751     700 lbs/500 lbs. 1" strip lbs.,A.S.T.M.,D-751 300 lbs/200 lbs. 6.1.5 Tear Strength: A.S.T.M, D-751          100 lbs. 6.1.6 Hydrostatic Resistence: Fed. Std. 5512.1                                  600 psi 6.1.7 Adhesion per one inch (seal); A.S.T.M. D-751 (2" per minute)                                        15lbs 6.1.8 Low Temperature: A.S.T.M. D-2136. -40 degrees F + / - 2 Degrees F 6.1.9 Flexibility/Resistence to Cracking Ten (10) pound weighted roller, sample size 2" x 12", fold 180 Degrees, pass roller ten time: PASS 6.1.10 Chemical Resistance: The liner material shall meet the following test criteria for automotive fuels: Test Procedure: Permeability A.S.T.M. E-96 Procedure BW/Inverted Cup Method Requirement: A. A.S.T.M. Fuel B .01 oz/Sq Ft/24 hrs B. Unleaded Gas .005 oz/Sq Ft/24 hrs C. Diesel Fuel .0002 oz/Sq Ft/24 hrs D. A.S.T.M. Fuel B/Ethanol 90/10 0.60 oz/Sq Ft/24 hrs Test Procedure: Volumn Swell A.S.T.M. D-543 Shall not exceed 3 2 percent Requirement: A. A.S.T.M. Fuel B 2.0 percent B. Super Unleaded Gas 2.3 percent C. Unleaded Gas 1.9 percent D. Diesel Fuel 1.0 percent E. Gasohol 2.7 percent 6.1.11 Puncture Resistance: A.S.T.M. D-751, Section 15.2 (Ball Tip)                 500 lbs. minimum 6.1.12 Puncture Resistance: A.S.T.M D-751 Section 15-2 (Screwdriver Tip)             80lbs. minimum 6.1.13 Stiffness: A.S.T.M. D-747 30,000 psi max. each direction 6.1.14 Mandrel Bend. A.S.T.M. D-2136 - 40 degrees C./no cracks. 8.0 ANCHORAGE SYSTEM 8.1 The liner shall be provided with an anchorage system which shall include hardware as detailed in the manufacturer=s installation drawings. 9.0 INSTALLATION 9.1 Installation of the factory manufactured liner system shall be performed by a factory approved and certified contractor. 9.2 A contractor who is not trained or certified may install the secondary containment liner system only under the direction of the factory authorized field technical assistance supervisor. Under this condition, the factory will provide a field report to the construction manager that the liner was installed under his direction. 9.3 The manufacturer of the secondary containment system shall supply detailed installation drawings covering all components supplied. 10.0 TESTING OF THE SECONDARY CONTAINMENT           LINER SYSTEM 10.1 The liner manufacturer shall provide written certification that the liner has been vacuum box tested at all panel thermal welded joint locations, and all panel materials have been visually inspected with detects noted and corrected prior to packaging. 10.2 When a membrane liner is fabricated, seamed, sealed, modified or repaired in the field, the part so fabricated, seamed, sealed, modified or repaired shall be subjected to a performance test prescribed by the manufacturer.